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    <title>MongoDB Jira</title>
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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-71476] Disparity between SemaphoreTicketHolder and PriorityTicketHolder queueing in benchmarks</title>
                <link>https://jira.mongodb.org/browse/SERVER-71476</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description></description>
                <environment></environment>
        <key id="2189506">SERVER-71476</key>
            <summary>Disparity between SemaphoreTicketHolder and PriorityTicketHolder queueing in benchmarks</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</priority>
                        <status id="6" iconUrl="https://jira.mongodb.org/images/icons/statuses/closed.png" description="The issue is considered finished, the resolution is correct. Issues which are closed can be reopened.">Closed</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="13202">Works as Designed</resolution>
                                        <assignee username="haley.connelly@mongodb.com">Haley Connelly</assignee>
                                    <reporter username="haley.connelly@mongodb.com">Haley Connelly</reporter>
                        <labels>
                    </labels>
                <created>Fri, 18 Nov 2022 09:49:47 +0000</created>
                <updated>Fri, 27 Oct 2023 13:51:50 +0000</updated>
                            <resolved>Thu, 2 Feb 2023 17:24:07 +0000</resolved>
                                                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="5163236" author="haley.connelly" created="Thu, 2 Feb 2023 17:23:59 +0000"  >&lt;p&gt;The benchruns serve as an upper bound on the performance regressions when the PriorityTicketHolder is enabled. As each ticket is immediately acquired and then released, which is unlikely in a real system since a ticket usually is held for some amount of work.&lt;/p&gt;</comment>
                            <comment id="5162088" author="haley.connelly" created="Thu, 2 Feb 2023 13:42:38 +0000"  >&lt;p&gt;&lt;span class=&quot;image-wrap&quot; style=&quot;&quot;&gt;&lt;img src=&quot;https://jira.mongodb.org/secure/attachment/429650/429650_image-2023-02-02-14-43-34-370.png&quot; style=&quot;border: 0px solid black&quot; /&gt;&lt;/span&gt;&lt;br/&gt;
With the new implementation of the PriorityTicketHolder &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-72072&quot; title=&quot;Integrate TicketQueue with futex into the PriorityTicketHolder&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-72072&quot;&gt;&lt;del&gt;SERVER-72072&lt;/del&gt;&lt;/a&gt;, the issue of &quot;skipping the line&quot; in the PriorityTicketHolder has been addressed. Above are the average performance numbers for each type of TicketHolder when ticketholder_bm.cpp is run 100 times.&#160;&lt;/p&gt;</comment>
                            <comment id="5123593" author="haley.connelly" created="Thu, 19 Jan 2023 13:31:55 +0000"  >&lt;p&gt;With the completion of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-72072&quot; title=&quot;Integrate TicketQueue with futex into the PriorityTicketHolder&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-72072&quot;&gt;&lt;del&gt;SERVER-72072&lt;/del&gt;&lt;/a&gt;, we are ready to revisit the benchmark performance of the PriorityTicketHolder&lt;/p&gt;</comment>
                            <comment id="5029433" author="haley.connelly" created="Mon, 5 Dec 2022 14:03:04 +0000"  >&lt;p&gt;While performance is under investigation, we are working on &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-71829&quot; title=&quot;Add latency distribution of operations to ticketholder benchmarks&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-71829&quot;&gt;&lt;del&gt;SERVER-71829&lt;/del&gt;&lt;/a&gt; to&#160;add latency distribution on the benchmarks so it is clear if the latency distribution is off in the future.&lt;/p&gt;</comment>
                            <comment id="4992383" author="haley.connelly" created="Fri, 18 Nov 2022 09:56:03 +0000"  >&lt;p&gt;A full description can be found in the comments of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-71213&quot; title=&quot;High variance in PriorityTicketHolder microbenchmark runs&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-71213&quot;&gt;&lt;del&gt;SERVER-71213&lt;/del&gt;&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="2179514">SERVER-71213</issuekey>
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